The error was specifically low pressure to that wheel and it gave me the option to disable SBC. I’m not sure how you would have low pressure to a caliper and the caliper be at fault - the SBC system went through all of the diagnostics and flagged the system as being bad. Max pressure on the left front was 64 bar, and the minimum was 69 bar, so it failed the pump.
He’s still got brakes, but he said the left front definitely feels weird if he gets on the brakes. Even if the caliper was stuck the pressure should still be at or above spec, correct? This is my first run in with SBC, so I’m not that familiar with it as far as failure mode. -D > On Jun 28, 2020, at 5:47 PM, Kaleb Striplin via Mercedes > <mercedes@okiebenz.com> wrote: > > That almost sounds like a caliper issue to me, I am not sure if that is > covered under the SBC warranty or not. > > On 6/28/2020 3:22 PM, Dan Penoff via Mercedes wrote: >> Worked on the oldest boy’s E320 CDI today. He said the left front brake has >> been making noise, but it works and the pads aren’t worn down. Hmm. >> >> Put the car on the DAS and ran a full set of diagnostics. A few bangs, some >> we expected, like EGR which is disabled, but a couple for the SBC. Ran the >> SBC diagnostics and sure enough, left front pressure is below spec. >> Explained the 25 year warranty to son, had him do a screen grab of the DAS >> errors, and wrapped things up. He’s calling the stealership tomorrow to get >> the car in for the SBC to be replaced under warranty. >> >> He decided after many months of it sitting on the shelf to install the glow >> plug controller to replace the one on the car that has failed. It’s bolted >> to the bottom of the intake manifold and has to be removed from below. He >> wasn’t able to get to the fasteners on the old one, so he unplugged it, >> plugged in the new one and zip tied it to some components in the general >> vicinity. Not ideal and certainly not what I would have done, but you know, >> he’s a grown ass man so he can make his own decisions and suffer the >> consequences, if any. >> >> So he fires the car up and it’s running much better. I would add that I also >> replaced some really sketchy wiring on one of the injectors that looked like >> it was the old self-destructing stuff. But - he get an alarm in the dash >> saying that the battery is low and the battery monitor is cutting off power >> to “convenience systems”. Whatever. It sort of freaked me out a little, so >> we threw it back on the DAS to run another set of diagnostics while we went >> inside and cooled off a bit (nearly 100F heat index here today.) >> >> While inside, I did some research on this battery nanny to find that there >> are two levels of alert based on how low the battery voltage gets. I >> immediately figured it fired off because we had the car sitting on the DAS >> with no charger on it for a good 45 minutes, after which he fires it up with >> full glow plugs with the new controller, I’m sure. Dogged the battery down >> considerably, I’m sure. >> >> So we look at the results of the diagnostics and find a bang in it about low >> battery voltage. I’m sure that’s it. >> >> He takes the car for a short spin and gets it again. Grrr. >> >> I told him to take the car out for a decent drive. He does. Comes back, >> battery nanny has retreated and no more alarms. >> >> The W211s are nice cars, but sometimes they make a W123 look attractive. >> >> -D >> _______________________________________ >> http://www.okiebenz.com >> >> To search list archives http://www.okiebenz.com/archive/ >> >> To Unsubscribe or change delivery options go to: >> http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com >> > > _______________________________________ > http://www.okiebenz.com > > To search list archives http://www.okiebenz.com/archive/ > > To Unsubscribe or change delivery options go to: > http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com > _______________________________________ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
